Question

please do this sum please please please​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

5^2m/5^-9=(1/5)^-1

5^2m+9=(1/5)^-1

5^2m+9 =5^1

2m+9=1

2m= -8

m= -4

I hope you know indices rules, which is applied here

rules that is applied here

a^m/a^n = a^ m-n

a^-n = 1/a^n

(a^b)^m = (a^bm)